Explosive-engine.



A. G. GRISWOLD.

EXPLOSIVB ENGINE.

APPLICATION FILED 8BPT.1.1906.

PATENTED DEC. 3, 1907.

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Z I! 2 I, E C" a 1):] 6" z 1 d A... \v Z i. d l 1 u I Z 9 a 2 l Z 2 5 Z I a i R I r INVENTOR Ari/tar 6? 65a wal N BX ATTORNEY \5 No. 872,342. PATENTED DEC. 3, 1907. A. G. GRISWOLD.

EXPLOSIVE ENGINE.

APPLICATION FILED SEPT. 1.190s.

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INVENTOR W ,drzizzzr 67.65715 wold ww f Y ATTORNEYY UNITED STATES PATENT OFFICE.

ARTHUR G. GRISWOLD, OF KANKAKEE, ILLINOIS, ASSIGNOR OF ONE-HALF TO J. B. GRISWOLD,

' 0F KANKAKEE, ILLINOIS.

EXPLOSIVE-ENGINE.

Specification of Letters Patent.

Patented Dec. 3, 1907.

To all whomit may concern:

Be it known that LARTH R G. GRIsWoLD, residing at Kankakee, in the county of Kankakce and State of Illinois, have invented a and economical construction, in which the several parts have a special correlation whereby amaximum explosive power is obtainable from a minimum working charge and in which an explosion is effected at each comlete revolution of the crank shaft, of a uniform and timed character, and in which the fuel feed from the carburetor is automatically drawn, in a manner'to obtain a desired charge without danger of excess or loss, and

in which the explosive charges act as scourers or cleaners for leavlng the cylinder 1n proper shape to rece1ve a new and initially compressed charge.

In its more subordinate nature, my invention has for its object to provide an improved construction of gas engine of the type stated, in which the working cylinder,

working agent feed devices and controlling means therefor, the piston and the exhaust, are correlatively so arranged whereby the full return stroke of the-piston is utilized for effooting the initial compression of a new charge as it is being forced into the working cylinder in such manner that 'a positive and effectiveexhaust or'blowing out of the burned residuum is obtained.

- In'its still more subordinate features, my

invention consists in certain details of construction and peculiar comblnatlon of parts,

all of which will behereinafter full explained, pointed out in the appended c aims,

and illustrated in' the accompanying drawings, in which:-- fl Figure 1, is a perspective view of my improved form of ex losive engine. Fig: 2, is

a vertical section t ereof, the piston being at Application filed- September 1- 1906- Serial No- 882.974.

the beginning of its compressing stroke, the exhaust and intake valves for the working cylinder being closed and the carbureter or working agent feed open. Fig. 3, is a similar view showing the piston at the beginning of its impelled charge com ressing positlon. Fig. 4, is a plan view of t e machine. Fig 5, is a horizontal section thereof, taken on the line 5 5 on Fig. 2.

In the practical application of my invention, I prefer to arrange the same for providing an engine of the u right type as shown in the drawings, but desire it understood thatwith but slight variations or modifications of the 'arts shown, my invention may be embodie in an engine of the horizontal pattern.

In the form shown, the engine comprises a closed casin C, in the nature of a cylinder, which has a ange c at the upper end for connecting with the bottom flan e b of the working-cylinder B, the two cylin ers C and B being preferably of like diameter, as shown.

The lower end of the cylinder C has a pendent, cent-rally disposed semi-circular and narrow extensions that forms the mate -for the semi-circular casing section P which is bolted to the extension 0 and together with the said extension 0 forms the closed casing for the crank member, of the power transmitting shaft 0 journaled in the long sectional hub like bearings 00 integrally formed on and rojected from the opposite. sides of the era casing sections C and P as best seen in Fig. 4, by reference to which it will be also noticed the shaft 0 has a balance wheel R at one end and a gear 1 on the same end, the pur ose of which will be presently ex lained, t 1e other end, in practice, having t e transmitting sprocket or pulley, not shown.

M designates a cross head slidably mounted in the casing 0, connected by the rod N with the crank shaft 0, and joined to the rod a of the working'piston A, said rod passing through the gland or stufling box S. So there can be no vacuum either in the crank casin or the cross head casing C, the cross headlias apertures V that maintain communication between the crank and the cross head casin s at all times. The wofking cylinder B has a port in its upper end that communicates with a supplemental fluid compressingchamber or hollow head T with which communicates acharging chamber in the nature of a tubc located adjacent to, but not in touch with the cylinder B, and which extends down to the bottom 01 the said cylinder B, its lower end being open to receive tubular valve casing f, threaded into the said lower end of tube G, provided with a feed inlet at one side that communicates with the aperture 9 in tube G that received the end 01' the delivery pipe (1 from the carbureter or workin I agent teed device D, which piped has a bac check valve d, the reason for which will resently appear. The valve casing'f also as a port f 2 that registers with an aperture q in the tube G and with a large port I) that leads to the bottom of the-working cylinder B, and at the upper end the casing f has a foot valve 'F normally held down to close 03- the said casing by a spring f suitably sustained. within thelcasing as shown.

H designates a valve or codperatmg with the inlet to the cylinder B and which is ar-' ranged to open inwardly, and is normally forced to a closure position by the spring K mounted about the upper end of the valve stem hand under a tripper device I, in the nature of a walking beam fulcrumed in the bracket 11 on the top of the working cylinder Whose outer end is pi'votally connected to a rod J, guided in theupper and lower brack ets j and having its lower end bifurcated to recelve the roller bearing j held to engage a cam L on a cam shaft Z mounted transversely of the machine in the brackets Vi -Z as clearly shown in the drawings, to which continuous motion is given by the gear 3 thereon, which meshes with an idler gear 2,

that engages the gear 1 on the power or crank shaft.

The'w'orking piston A is oi suitable thickness and has the usual packing rings, and thestroke'of the piston is so regulated as to provlde for a maximum compression of the initially compressed charge when it reaches the limit of its upward stroke, and for etiect-ing a maximum initial compression to the new charge onits forward or impelled stroke before it fully uncovers the exhaust,

so that, when the exhaustis opened, the

new charge will, by reason of its initial comression, completely scour or free the workmg cyllnder of the burned residuum and fill it with a new and pure charge of whrking agent before the piston begins the back or final compression movement.

The exhaust port E is at times shut oil by a spring closed valve Q, mounted on a liftv rod or stem g, located outside the casin C and guided in a bracket j, its lower end hemg bifurcated to receive a friction roller erases shaft Z, as shown.

R designates a cap plate for closing the man hole 9" int-he casing The working cylinder is water jacketed in the usual manner, as shown.

By reason of the peculiar arrangement and cod erative coinbination'of-the several parts as escribed and shown, a compact, simple a and stable construction of engine is provided and'in which the crank shaft is so held with ing on the beginning of its return or upward thrust. During the said adjustment and travel of the iston, the inlet valve H and exhaust valve lE are held closed by reason of the cams now being disengaged from their lift rods and the compression of'the charge being'n'ow effected in the explosion end of the working cylinder, the valve d of the car- .bureter is nowopen and the feed valve is held closed which provides for taking in a carburetor and to the back of the piston. When the crank, which is now traveling in the direction'of the arrow 10 on Fig, 2, just begins to pass the center, an explosion of the now efi'ected in any well-known manner, which forces the piston to the return stroke as indicated by the arrow on Fig. 3. During was turned in back of thepiston on the upstroke, is initially compressed and 'forced past the valve F, which is now open, into the tube G and the supplemental chamber T, the

valves Q and d being now held closed by the unexpended pressure of the exploded charge in the cylinder. As the piston descends th an operative position, the cam L actuating the rod to open the valve H just afterthe whereby the said valve will open immedie ately' after the initially compressed charge residuum or burned mixture Within the said when held down y suction on the up stroke res ect to the cross head and the working new charge of the working agent from the this movement, the working charge which partial compression of the ,newworking charge and the valve H held closed by the camsfor actuating the rods g and approac iston begins to uncover the exhaust enters thecy-linder so as to force out all the cylinder, it bein obvious that the valve Fl held to be engaged by a camv Z on the cam v tion shownin Fig. '2, the piston is now travelhighly compressed charge in the cylinder is of the piston B, closes off the tube G from the cylinder and also from the fuel feeding carbureter device, it being also apparent by referring to Figs. 2 and 3 that when the piston B begins its up thrust, the cams that trip the valves 'Q and H will disengage the actuating rods for the said valves, while the final tion it may be set "let thereof, a

' into thetcylinder and compressions of the initially compressed charge within the cylinder A will now assist the springs and hold the valves closed, while at the same time the suction caused by the up stroke of the piston draws in a new charge, it being understood that the com ressed charge infront of the piston is fired y any suitable electrical or mechanical sparking device controlled by the movement of the machine.

While I have described the movement of the piston up and down, it is understood that such movement, will also mean a to and fro stroke of the piston in whatever posifor operation whether in an upright, horizontal or other character of engine.

Having thus described my invention, what I claim and desire ent, is

1. The combination of a casing, a crank shaft mounted therein, a working cylinder and piston therefor, a second-casing connected at one end of the working cylinder and having communication withthe crank casing, the two casings and the working cylinder being in longitudinal 'alinement, a cross. head for the crank shaft, movable in the second casing, said cross head having a rigid rod connection with the piston, valve controlled exhausts and inlets for the Working cylinder, a supplemental fluid compression chamber working cylinder inlet and communicates with that end of the cylinder opposite the invalved working agent feed that discharges into the su plemental compression chamber, a foot vafire in the said supplemental chamber that discharges automatically and closes as a new charge is being drawn means for controlling the inlet and exhaust valves at predetermined times.

to secure by Letters Patthat discharges through the.

2. The combination with a working cylin- I der having a valved inlet and a valved exhaust;-of a su plemental compression chamb'er,that disc arges at one endv through a valved inlet of the working cylinder and has the other end in communication with the other end of the Working cylinder, a back check valve in the said other end of the supplemental compression chamber, a working piston, a crank shaft and mechanical devices actuated by the crank shaft for controlling the exhaust and inlet valve for the working cylinder at predetermined times,

3. In an explosive engine of the character described, the combination with a working cylinder, a piston and an automatically controlled valve exhaust and inlet port for the cylinder, a supplemental compression chamber that communicates at one end through the inlet of the working cylinder, the other end of the said compression chamber having communication through the opposite end of the working cylinder, a valve operating under suction for cutting off the supplemental compression chamber as a new charge is bein brought into the a fuel feed having a back discharges into the supp sion chamber at a point and the discharge of the of the working cylinder, substantially as shown.

4. In an explosive engine of the character described, the combination with the working cylinder and piston, said working cylinder having an automatic valve controlled exhaust port and an automatic valve controlled exhaust in one end thereof, the other end having a fuel intake; of a supplemental or charging chamber in communication with the fuel inlet of the cylinder, a Working agent valve feed or carbureter that discharges through the charging chamber and into theback of the piston and fuel intake for the cylinder on the return stroke of the piston, said supplemental chamber being located outside of the Working cylinder, and a valve in said cylinder ata point near the point of its inlet, allbein ,ar ranged substantial-1y as shown anddescri ed.

5. In an explosiveengine of the character described, the supplemental or, charging chamber that discharges through the valved inlet of the working cylinder and has communication withthe fuel intake for the cyl-- inder, a carbureter connected to the lower end of the said charging chamber, a tubular member detachably fitted in the lower end of the charging chamber and a foot valve on said tubular member, all being arranged substantially as shown'and described.

6. In a gas engine of the character described, the combination with the working cylinder having a supplemental or domeshaped portion at one end, an inlet connectingsaid dome portion to the cylinder, an automatically controlled valve for the said inlet, an exhaust for the cylinder, an automatically controlled valve for said exhaust,

the controlling means for the inlet valve comprising a walking beam and a vertically adjustable shifting rod connected thereto, actuating devices for the exhaust valve including a lifting rod, a crank shaft and piston, a transversely dis osed shaft having cams for engaging the lifting rods ofthe valve actuating devices, gearing connecting said Working cylinder that communicates at one end With the dome portion of the cylinder and at the other end With the opposite end of the cylinder, said Working agent feedbe ing connected With-the charging chamber at a point'in line with its communication with the cylinder, a check valve for the'working agent feed and a foot Valve in the charging 10 chamber, all being arranged substantially as shown and described.

ARTHUR c. IGRISWOLD.

Witnesses J L. ZOPF, Y J. W. FLEMING. 

